问题补充：
great progress Little Jack has made! He made few careless mistakes
in the final.
A. How; so
B. What an ; so
C. What; so
D. What; such
答案：
A. How; so
B. What an ; so
(答案→)C. What; so
D. What; such
解析：句意：小杰克取得了多么大的进步啊！他几乎没有犯粗心大意的错误。progress为“进步”，不可数名词，so 后接形容词，但是如果名词前有many,much,few修饰时用so ,故选C
